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英国斯特林大学水产养殖研究所对罗氏沼虾和日本沼虾两种幼体生长进行比较研究。通过两种沼虾幼体生长比较研究结果表明,发现日本沼虾幼体存活率高于罗氏沼虾幼体存活率20％,其日本沼虾幼体变态速度比罗氏沼虾幼体快。但日本沼虾幼体孵化数大大低于罗氏沼虾,日本沼虾幼体平均孵化数为1500尾,而罗氏沼虾幼体平均孵化数为354100尾。仔虾孵化数的严重差异,直接影响了亲虾需要量。日本沼虾
British Institute of Aquaculture, Stirling University, Macrobrachium rosenbergii and Macrobrachium nipponensis two comparative study of growth. The results of comparative study on the growth of larvae of two Macrobrachium nipponensis showed that the survival rate of larvae of Macrobrachium nipponense was higher than that of larvae of Macrobrachium rosenbergii and the metamorphosis rate was higher than that of larvae of Macrobrachium rosenbergii. However, the number of larvae hatched in Macrobrachium nipponense was significantly lower than that in Macrobrachium rosenbergii. The average number of larvae hatched in Japan was 1,500, while the average number of larvae hatched in Macrobrachium rosenbergii was 354,100. Aberrant hatch number of serious differences directly affect the amount of broodstock. Japanese Macrobrachium